When it comes to locks, you don't want no scrubs. That's why you should lock your bike up with the OnGuard Bulldog Mini LS U-Lock. It's tougher than a biker gang and will put up one heck of a fight if someone tries to pry it, drill it, pick it or cut it.

I like the mount, the lock, keys. They all do what they claim to do. Protect the bike, but it has an anoying rattle. I would not ride with this on the mount very long because of the rattle. 15 min ride and I am ready to shoot my self. I usually put it in my commute backpack for that reason. The mount is secure and I have no fears of it falling off. I like the rubber coating around the shaft. It is about 2.0 mm thick. Make sure you keep the little tag that comes with it to get new keys, register online to get bike repalcement costs.